You'd think so, but failing disks in raidz arrays can cause extreme performance problems, and failing disk electronics can cause lockups on SAS/SATA controllers.
RedHat isn't a startup banging out MVP products and hoping for the best.
A lot of businesses rely on RedHat being the last line of support for thier systems, and if they're losing or unable to hire genuinely senior engineers, that's a serious problem for everyone involved.